Relatives told police the girls were put to bed around 10 or 11 p.m. Saturday, but when family checked in on them shortly before midnight, the girls were gone, and their coats were missing, too.

Police said a "concerned citizen" found Samaria Johnson, 9, and Olivia Erkins, 4.

The man couldn't determine where the girls lived, so he took them to his own house.

Police said the man was unable to contact the girls' family, so he eventually called his pastor.

The man then dropped the children off at the District Five police station at about noon Sunday.

Police told WIN 12 News, "It does not appear the children were harmed while out overnight."

Police said they are still trying to determine why the girls ran away.

WISN 12 News has learned a 27-year-old female relative of the girls was arrested Sunday afternoon on suspicion of child abuse. She remains jailed without bail as Milwaukee police continue their investigation.

WISN 12 News has not named the woman under arrest because, so far, no criminal charges have been filed. She does not have a prior criminal record in Wisconsin.

The girls are staying with a relative, WISN 12 News learned.

WISN 12 News left messages for the Bureau of Child Welfare to see if there have been any prior contacts with the family, but the calls were not returned.